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公开(公告)号：US10823075B2
公开(公告)日：2020-11-03
申请号：US15160365
申请日：2016-05-20
Applicant: United Technologies Corporation
Inventor： Jorn A. Glahn , Denman H. James , Amy R. Grace
IPC: F02C7/24 , F01D21/14 , F02C7/224 , F01D21/12 , F02C7/14 , F01D25/18 , F02C9/28 , F02C3/04 , F02C7/06 , F02C7/32
Abstract: According to an aspect, a method includes predicting, by a processor, a projected oil-wetted metal temperature in a lubrication system of a gas turbine engine at shutdown based on one or more thermal models prior to shutdown of the gas turbine engine. The processor determines a coking index based on the projected oil-wetted metal temperature and a coking limit threshold associated with one or more engine components. An oil coking mitigation action is triggered as a shutdown management event of the gas turbine engine based on the coking index.
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公开(公告)号：US10107197B2
公开(公告)日：2018-10-23
申请号：US13690767
申请日：2012-11-30
Applicant: United Technologies Corporation
Inventor： Francis Parnin , Paul H. Dolman , David M. Daley , Denman H. James , Richard W. Clark
Abstract: A lubrication system is provided. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.
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公开(公告)号：US09885250B2
公开(公告)日：2018-02-06
申请号：US14921429
申请日：2015-10-23
Applicant: United Technologies Corporation
Inventor： Denman H. James
CPC classification number: F01D21/003 , F02C3/04 , F02C7/06 , F02C7/26 , F02D41/26 , F05D2260/80 , F05D2260/85 , F05D2270/301 , F05D2270/304
Abstract: An engine health monitoring system includes an engine component having a sensor system configured to monitor at least one parameter of the component. An autonomous monitoring system is coupled to the sensor system and is configured to receive and store the at least one monitored parameter while an engine controller is unpowered. The engine controller is communicatively coupled to the autonomous monitoring system.
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公开(公告)号：US20180003082A1
公开(公告)日：2018-01-04
申请号：US15709663
申请日：2017-09-20
Applicant: United Technologies Corporation
Inventor： Denman H. James
IPC: F01D25/20
Abstract: A lubrication system for use with a gas turbine engine includes a first reservoir for containing a lubricant. The first reservoir includes a first discharge passage through which the lubricant is flowable in a first direction. A second reservoir contains the lubricant. The second reservoir includes a second discharge passage through which the lubricant is flowable in a second direction. The first direction is generally opposite to the second direction. A first pump pumps the lubricant from the first reservoir. A second pump pumps the lubricant from the second reservoir. A manifold distributes the lubricant to a component. The lubricant from the first pump and the second pump flows into the manifold and exits the manifold through a manifold discharge.
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公开(公告)号：US20160160714A1
公开(公告)日：2016-06-09
申请号：US14908561
申请日：2014-08-14
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Denman H. James
CPC classification number: F01M1/02 , F01D25/18 , F01D25/20 , F01M11/045 , F01M2001/0253 , F01M2001/123 , F01M2001/126 , F02C7/06 , F02C7/32 , F04D29/053 , F04D29/063 , F04D29/321 , F16N7/40
Abstract: A lubrication system for use in a gas turbine engine is comprised of a first pump driven by a first shaft at a first speed and a second pump driven by a second shaft at a second speed that is faster than the first speed. The first and second pumps provide lubricant to an engine operating system. The pumps are optimized based on differential speed changes between the two drive speeds for the respective shafts to provide an optimized oil flow for the engine as a whole. A gas turbine engine and a method of operating a gas turbine engine are also disclosed.
Abstract translation: 用于燃气涡轮发动机的润滑系统包括以第一速度由第一轴驱动的第一泵和以比第一速度快的第二速度由第二轴驱动的第二泵。 第一和第二泵为发动机操作系统提供润滑剂。 基于相应轴的两个驱动速度之间的差速变化来优化泵，以为整个发动机提供优化的油流。 还公开了一种燃气涡轮发动机和操作燃气涡轮发动机的方法。
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Patent Agency Ranking
公开(公告)号：US20160032840A1
公开(公告)日：2016-02-04
申请号：US14775808
申请日：2014-03-14
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Denman H. James
CPC classification number: F02C7/28 , F01D11/003 , F01D25/16 , F01D25/183 , F02C7/06 , F04D29/063 , F04D29/124 , F05D2240/55 , F05D2240/70 , F05D2260/231 , F05D2260/941 , F16C19/525 , F16C33/78 , F16J15/16 , F16J15/342 , F16J15/3452
Abstract: An assembly is provided that includes a shaft, a bearing, a stator seal element, a rotor seal element and a shield. The shaft extends along an axis. The bearing supports the shaft and receives lubrication fluid. The stator seal element circumscribes the shaft. The rotor seal element is mounted on the shaft axially between the bearing and the stator seal element. The rotor seal element forms a seal with the stator seal element. The shield substantially prevents the lubrication fluid from traveling axially away from the bearing onto the rotor seal element.
Abstract translation: 提供了一种组件，其包括轴，轴承，定子密封元件，转子密封元件和屏蔽件。 轴沿轴线延伸。 轴承支撑轴并接收润滑液。 定子密封元件围绕轴。 转子密封元件轴向安装在轴上，轴承和定子密封元件之间。 转子密封元件与定子密封元件形成密封。 护罩基本上防止润滑流体轴向地离开轴承移动到转子密封元件上。
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公开(公告)号：US11333039B2
公开(公告)日：2022-05-17
申请号：US16818593
申请日：2020-03-13
Applicant: United Technologies Corporation
Inventor： Denman H. James , Nigel D. Sawyers-Abbott
Abstract: A gas turbine engine includes a turbine and a compressor in rotational communication with the turbine via a shaft. The shaft is rotatable about a longitudinal centerline and includes a first axial end and a second axial end opposite the first axial end. The gas turbine engine further includes a first bearing compartment including a first compartment casing detachably mounted axially outside the compressor and the turbine. The first bearing compartment is in contact with the first axial end of the shaft and includes a first bearing which rotatably supports the shaft. The first bearing compartment is self-contained such that an internal lubrication system of the first bearing compartment is fluidally isolated from a remainder of the gas turbine engine outside the first bearing compartment.
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公开(公告)号：US20210189961A1
公开(公告)日：2021-06-24
申请号：US16718504
申请日：2019-12-18
Applicant: United Technologies Corporation
Inventor： Nicholas Rendina , Denman H. James
Abstract: Oil lubrication systems for use on gas turbine engines are described. The systems include a conduit and an air/oil separator connected to and arranged along the conduit. The air/oil separator comprises includes a housing and a semi-permeable divider within the housing, the semi-permeable divider being permeable to air but not oil. The semi-permeable divider separates a first flow path of an air/oil mixture and a second flow path of low pressure such that air from the air/oil mixture passes through the semi-permeable divider and is removed from the air/oil mixture, and wherein an air-to-oil ratio is less at the second end of the first flow path as compared to the air-to-oil ratio at the first end of the first flow path.
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公开(公告)号：US10711645B2
公开(公告)日：2020-07-14
申请号：US15709663
申请日：2017-09-20
Applicant: United Technologies Corporation
Inventor： Denman H. James
Abstract: A lubrication system for use with a gas turbine engine includes a first reservoir for containing a lubricant. The first reservoir includes a first discharge passage through which the lubricant is flowable in a first direction. A second reservoir contains the lubricant. The second reservoir includes a second discharge passage through which the lubricant is flowable in a second direction. The first direction is generally opposite to the second direction. A first pump pumps the lubricant from the first reservoir. A second pump pumps the lubricant from the second reservoir. A manifold distributes the lubricant to a component. The lubricant from the first pump and the second pump flows into the manifold and exits the manifold through a manifold discharge.
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公开(公告)号：US10344679B2
公开(公告)日：2019-07-09
申请号：US14775808
申请日：2014-03-14
Applicant: United Technologies Corporation
Inventor： Denman H. James
IPC: F02C7/06 , F02C7/28 , F01D11/00 , F01D25/16 , F01D25/18 , F04D29/12 , F16C19/52 , F16C33/78 , F16J15/16 , F16J15/34 , F04D29/063
Abstract: An assembly is provided that includes a shaft, a bearing, a stator seal element, a rotor seal element and a shield. The shaft extends along an axis. The bearing supports the shaft and receives lubrication fluid. The stator seal element circumscribes the shaft. The rotor seal element is mounted on the shaft axially between the bearing and the stator seal element. The rotor seal element forms a seal with the stator seal element. The shield substantially prevents the lubrication fluid from traveling axially away from the bearing onto the rotor seal element.
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